Rachel Denny Clow/Caller-Times Jesus Guerrero stands at the window of a home that burned down late Monday night. He is the stepbrother of Victor Guerrero, 8, and Isaac Guerrero, 13, who died in the home fire in Robstown. Victor and Isaac's mother, Dalia Guerrero, also died in the fire.

Corpus Christi Caller-Times

Rachel Denny Clow/Caller-Times Sergio Guerrero holds photos of his son, Isaac Guerrero, 13, on Tuesday. Isaac, Victor Guerrero, 8, and Dalia Guerrero died in a home fire in Robstown late Monday.

Corpus Christi Caller-Times

Rachel Denny Clow/Caller-Times Sergio Guerrero looks through photos of his son, Isaac Guerrero, 13, on Tuesday. Isaac, Victor Guerrero, 8, and Dalia Guerrero died in a home fire in Robstown late Monday.

Corpus Christi Caller-Times

Mike Baird/Caller-Times Tina Ortiz ties a stuffed bear to a wreath of ribbons to place on her sister's Robstown property Tuesday after she and her two sons died in a fire. Electricity went out in the 600 block of Petronila Road, and the family had lit candles for light. The official cause of the fire isn't yet determined.

Rachel Denny Clow/Caller-Times Family friend Angela Prishker (left) hugs Jesus Guerrero at the scene of a house fire in Robstown on Tuesday. Jesus Guerreroís step brothers, Victor Guerrero, 8, and Isaac Guerrero, 13, as well as their mother Dalia Guerrero (not Jesusí mother), died in the fire at their home late Monday night.